Physics · Unit 2 · Linear motion and force · Linear motion
AI-marked practice questions tied to QCAA mark schemes for this exact LO. Free to start.
Start free practiceFull questions, answers and worked solutions unlock when you start a free practice session.
A student investigating forces in one dimension applies multiple forces to a 2.5 kg block resting on a horizontal surface. The block experiences a forward applied force of 18 N, air resistance of 3 N, and friction of 7 N. When released, the block accelerates at 2.8 m s⁻². Determine the resultant force acting on the block and justify whether the observed acceleration is consistent with the applied forces.
A student investigates the forces acting on a shipping container being loaded onto a cargo vessel. The container is pulled horizontally along a loading dock by a cable winch. During the investigation, the student records force sensor data at three different phases of the motion. Refer to the data below and determine the resultant force acting on the container during Phase 2. Justify your conclusion using evidence from all three phases.
A crate of mass \(45\) kg is being pulled along a horizontal floor by a rope inclined at \(25^\circ\) above the horizontal. The tension in the rope is \(180\) N. A frictional force of \(95\) N opposes the motion. Determine the magnitude of the resultant force acting on the crate in the horizontal direction.